Your videos are extremely helpful! I am in A&P school and have been tasked with researching this engine! How does the fuel control unit work? and how are air pressures read throughout the engine
I found your videos after being reminded of a surplus Allison 250 I let slip through my hands many years ago. Would have been the start of many cool projects. Your videos are really well done, kudos!
Thanks for the video, how does the starter generator work? You said the starter gets the N1 to a certain speed, how does that happen? Is it mechanically linked? How high could the starter spin the N1?
The starter/gen is connected directly via gears to the accessory case. Nose turbine engines have to spin about 15% min before the start. It depends on the engine. I think this particular engine can get to near 20% on a ground start. Probably around 18% on battery alone.
Hal, could you explain how the P.T. Governor functions and how it relates to the Gas Producer Fuel control? Basically, how does the engine turn a N2/Np speed into fuel demand?
Your videos are extremely helpful! I am in A&P school and have been tasked with researching this engine! How does the fuel control unit work? and how are air pressures read throughout the engine
you did an awesome work, congratulation for excellent Presentation.
I found your videos after being reminded of a surplus Allison 250 I let slip through my hands many years ago. Would have been the start of many cool projects. Your videos are really well done, kudos!
More more more!!! Great content keep it coming thank you.
Thank you well explained
3:48 es la imagen mas general de las piezas
Thank you!! I've been trying seek help understanding this engine for quite a while
Thanks for the video, how does the starter generator work? You said the starter gets the N1 to a certain speed, how does that happen? Is it mechanically linked? How high could the starter spin the N1?
The starter/gen is connected directly via gears to the accessory case. Nose turbine engines have to spin about 15% min before the start. It depends on the engine. I think this particular engine can get to near 20% on a ground start. Probably around 18% on battery alone.
bleed valve /during low rpms STALL ??
Very informative. Thank you both!
thanks learned things I did not know
absolute masterpiece
very good
Hal, could you explain how the P.T. Governor functions and how it relates to the Gas Producer Fuel control? Basically, how does the engine turn a N2/Np speed into fuel demand?
Gas producer speed is influenced by N2 Governor which itself senses PT speed
Does anyone know where a 250 cutaway can be found for purchase???
I want to know exactly how they build that personal because i want to build a motorcycle that engine
How much torque does it produce, and shaft size?
Cause i can totally see this as a automotive engine. Gear reduction of course.
I want to make that engine with my own hand turn into motorcycle just like y2k